Rank: Administration Groups: Registered, Advanced Member Joined: 23/06/2009(UTC) Posts: 1,740 Was thanked: 318 time(s) in 268 post(s)
|
Hello, Here is more about block matrices: A←mat(1,0,0,0,1,0,0,0,1,3,3)B←mat(0,0,1,3,1)mat(A,A,A,A,2,2)*mat(B,B,2,1)=mat(mat(0,0,2,3,1),mat(0,0,2,3,1),2,1)mat(A,A,A,A,2,2)*mat(0,1,2,1)=mat(mat(1,0,0,0,1,0,0,0,1,3,3),mat(1,0,0,0,1,0,0,0,1,3,3),2,1)sum((mat(A,A,A,A,2,2)*mat(B,B,2,1)),i,1,2)=mat(mat(0,0,4,3,1),mat(0,0,4,3,1),2,1)sum((mat(A,A,A,A,2,2)*mat(0,1,2,1)),i,1,2)=mat(mat(2,0,0,0,2,0,0,0,2,3,3),mat(2,0,0,0,2,0,0,0,2,3,3),2,1)sum((A*mat(0,1,2,1)),i,1,2)=mat(0,mat(2,0,0,0,2,0,0,0,2,3,3),2,1)but this, of course, is not allowed: A*mat(0,1,2,1)=#I think that Andrey did not finish all the issues regarding block matrices yet. Regards, Radovan Edited by user 15 February 2011 10:29:00(UTC)
| Reason: Not specified |